Fur stretching and nailing machine



' Feb." 4, 1930. A. ALTMAN 1,745,594

FUR STRETCHING AND NAILING MACHINE Filled 001. 2. 1928' 2 sheets-(sheet 1 lln I f 75 77 INVENTOR ATTORNE Feb. 4, 1 930. A. ALTMAN A 1,745,594

vFURl STRETCHING A ND NAILIG MACHINE Filed oct. 2. 192g 2 sheets-sheet 2 UNITED STATES y ALEXANDER AL'IMAN, OF BAYONNE, NEW JERSEY 1 j vout and specilically defined and i' Y finissimad Feb. 4, i930 A1' .A.TENT oFFicE y :FUR sTnnTcnING AND `nnuaire MACHINE Application filed October2, 1928. Serial No. 309,850.

" l Thisinvention relates to improvements in f 5`Will eliminate the stretching and nailing ofV y point and then nailing samey at the said point.

1A further object of theinvention is to prof vide a device of this nature having means for automatically feeding nails andvahning same n in position tokbe struck by a hammer on the next operation of the machine.

IA still further object of the invention is to provide a device of this naturevvitha solenoid controlled bya switch of the make and break type so thatby a singleoperation of the said 29, switch the solenoid will become momentarily ,energized and operate a hammer to make a.

.single stroke after which the electric contact ofthe switch will be 4broken and the hammery n ance of a pair Lof pliers used as a hammer. p ,f Another object is to produce a device of thev .will be returned to normal position.

' character described in'vvhich'the maximum I simplicity of construction and operation is se` Cured. I

. p Y therl objects and advantages Wili appear y as tthe nature of the improvements is better l j understood, the invention consisting substantiallywin the novel arrangement and co-rela-` tion of partseherein fully described7 'and VK,illustratedin the accompanying drawings, Y Y wherein similar reference characters areused j to describe corresponding parts throughout Vthe severalviewaeand.then finallyv pointed ,indicated in the y.appended claims.

i y The disclosure made the basis of enemplii fying the presentinventive concept suggests a practical embodiment thereof, but the finj!A f ,Y vention'is notto be restricte'dto the exact details of this disclosure, `and the latter, therefore, is tobeunderstood froman illustrative, rather than a restrictive standpoint. Y l The inventive idea involved is capable of receiving a variety of mechanical expressions,

lf fone of which, for the purposes of illustration,

is shown in the accompanying drawings, in

Which `Figure 1 is a side view in elevation partly in section of one embodiment of my invention. Fig. 2 is a top plan vieW of the ldevice partly in section With some of the parts omitted foi4 the sake of clearness.

Fig. 8 is a front view of the hopper ,showing the nail segment opening and the closing means therefor.

`Fig. 4 is a fragmental detail vievvof the fur stretching portion of the device. y

Fig. 5 is a fragmental detail vieW of a p0rtion of the nail chute and escapement mechanisms. i i V l Fig. 6 is a diagrammatic view of they elec trical connections ofthe solenoid and its operating switch and A Fig. is a fragmental plan vieu7 of a section f onf'fur ready to be stretched'and nailed.

It is customary at the present time for fur? riers to nail and stretch previously prepared and dampened furs by hand with the assist- This is'a very lengthy and costly operation.

vIn order to obviatethis loss of time and eX@ pense, I have invented my new and improved y fur stretching and nailing device.

yhoused asolenoid'14 throughthe kcenter of Which passes a tubular casing 15 in Which the core 16 ofthe solenoid is suspended upon a spring 17 one end of which is'anchored in a hook 18 projecting from a cap 19 which closes the tubular'casing 15 at its upper end, and the 9 other end of the said spring is secured to a pin 20 in the :core 16. `Suitably secured to the lower end'of the core 16 is arod or hammer 21 rovided at its lower end With a concave suriace 22. In the lower end of the tubular Vhousing 15 there is suitably secured a combined fur gripping and nail guiding member 23 provided With a central tapering bore 24 through Which the hammer 21 is adapted to i pass when the solenoid 14 is energized. The

naled a short shaft 31 upon one end of which there is secured an arm 32 supporting a loop of wire 33 forming an escapement, the object of which will presently be described. At the opposite end of the shaft 31`tl`iere is suitably mounted a link 34 provided at its free end with a slot 35 in engagement with a pin 36 in one arm 37 of a lever 38 pivotally mounted on a pin or stud 39 journaled in the framevr 10.

The other arm 40 of the lever 38 is secured byv means of a pin 41 to a link 42 in engagement with one end of an operatinglever 43 pivot-V ally mounted at 44 on the frame 10. The said operating lever 43 is provided at its op- Y posite end with a downwardly projecting y land suitably insulated therefrom is a make and break switch 50 of any well knownmake, j

member 45 to which is Vsuitably secured a finger piece 46. Mounted within the lframe 10 provided with a pivotally mounted arm 5l projecting outwardlyof the said frame and in the path of a one way spring pressed latch 52 mounted von a pin 53 in the operating lever On the stud 39 there is also secured a segment 55 provided with a centralopening 56 extending through substantially the entire i length thereof. The

said slot being vwide enough to permitthe shank of the nails 57 l to freely enter therein,.but not wide enough for the head to pass-therethrough. .An inclined nailv guiding plane 59 commencing atV the rear ofthe nail segment 55 and terminating. at the front of the device is suitably securedV to 'the :frame 10 and to the cover 13. The' said nail guiding plane comprises two Y parallel wires 60 and 61 suitably bentr and ciirved (li`igs. 1 and r2) and a plate 62 simi# larly shaped spaced above the said wires and joined to vthem by intermediate wire sections 63 soldered to the said plate and wires. An

i auxiliary nail guide wire 64'is also providedl .at the front of the nail guiding plane.

A'nail chute 65 is providedand supported i i' at the'frontof thesolenoidca'sing 12, and is in line with'the front end of the nail guiding plane and in line with and directly below the escapement loop 33.v 1The said chute is proj Avided at its lower .end with a'lower inclined nail; guiding vplane 66 comprising a pair of spaced spring 4wire members 67 which project intothe bore 24 of the member 23 and yterminate in short and approximately horizontal ends of a nail. Y

Between a pair of lugs orears at the 67 adapted to support the head bottom of the frame 10 there is pivotally mounted at 71, a bell crank leve-r 72, comprisl ing a lower or horizontal arm 73 and a vertical arm 74, the first mentioned arm being provided at the front thereof with teeth 75 which y are adapted to Vnormally engage with similar teeth 76 at the bottom ofthe member 23. The said arm 73 is also provided with a slot 77 in alineinent with the bore in the member 23, and with openings 78 .in linewith pins 79 secured in the said member 23 by screws 8O and the said -pinsproject beyond the vbottom of the arm 73. The arm 74 terminates in a finger piece 81. A spring 82 presses against the arm 73 and tends to normally swing the bell crank lever downwardly. The'fentire device may be propelled along a surface on a pair of rollers 83, only one of'V which Yis shown inthe drawings, the other one being directly in line therewith but onV the opposite side of the frame. Y 'f y j The operation of the device is as follows: A strip of fur 85 previously moistened and made Vup of a plurality of sections 86 joined orfk Y sewn together along seams 87, is Vplaced upon a board 88 with one edge 89 of the fur even with a line 90 of a design laid out uponv the said board. The device is then placed either upon the fur or upon the board with the forward end of the arm 73 near the said edge 89. A nail may then be droppedv into the chute 65wliich will drop into the member 23 with its head resting against the surface of the bore 24 andupon pulling down the iinger piece 46, vthe operating lever 43 will swing in the direction of the arrows (Fig. 1) and` swing the nail segment 55 andthe nail escapee ment into the dot and dash position (Fig. 1) causing the nails 57 picked Vup from the hopper 11 to slide down the nail guide 59 to the front of the device, the first nail stopping against the' leg 91 ofthe esca-pement loop 33, j

the said leg then being in its forwardQposition or directlyin Vthe path of the nail. During this operationY the switch arm 51 will have been actuated by the latch 52 and caused the contact arm 5()2L to momentarily engagey the contacts 50b closethe circuit to energize the solenoid 14, pull the core and'hammer downv once to strike the nail and drive same'into the board through the fur. As soon as the latch 52 has passed beyond the end of the switch armV 51, a spring A51a will, causeV the switch to break contact and the core and hammer will be drawn back to normal position by the Y spring 17. As soon as the iinger piece 46 is released a spring 42EL will return the .remaining parts to normal'position.A During this return 'to normal position the first nail in the Lnail guide will be permitted to pass through a passageway 92 and drop into the chute into position for the next operation. It will be understood that dueto the fact thatthe auxiliary nail guide 66 is'ma'de of spring wire the hammer will force same back when striking the nail.

During the upward movement of link l2 and 'the nail segment 55, the segment will` come in contactv with a plate 95 pivoted at 96 K lon a wall 97 of the hopperand lift the said' plate and partly uncover an opening 98 in the said wall and as soon as the upper end of j the ylink 42 comes in contact with a lug 99 on yan arm' 100 pivoted at 101 the said plate will be lifted to its dot and dash position F ig. 3, entirely uncovering the slot and permittingthe nails to pass out of the segment into the nail guide. A plate 102 seeuredfto the interior of the wall 97 and a projection` n 103 on the nail guide plate 62 prevents the nails from falling out of the segment whenk i' n ythe said segment is thrown upwardly. The

`Aeo

` teeth 75 on the lever arm 7 3, the'pins 79 pene-' operation is repeated until one end is nailed down, after which-it becomes `necessary to stretch and straighten the fur at its seams and nail same in place. This 1s accomplished V.by inserting the pinsv 79 into the fur at or near the said seams, simultaneously stretching the fur and straightening the seams by pulling on the device, and then driving a nail through the fur andrepeating the operation until the entire length of the fur has thus been stretched and nailed.

To stretch and nail the fur at its freev edges, the fur is gripped at the said ,edges between the teeth 76 of the member 23 and the @trate the fur, the finger piece 81 is'vgripped by the thumb ofthe operator and the fur is l pulled until it ,reaches a boundary line 105 to which the fur is being drawn, one of which /is shown in Fig. 7 and the nails are jdriven in one at a time until the` entire` fur is stretched and nailed.` y

Current is supplied to the device through a lead wire 106 connected to oneterminal 50b from a source of supply not shownthrough .the contact arm a when in closed position,

through the oppositek terminal 50h, thence through a lead wire 107 tojthe solenoid,

y"through the solenoid into a lead wire 108 ref turningto-the source of supply.

- f y From the above it will be seen Vthat I have provided a simple and efficient fur stretching and nailing device, positive in action and in- .ably mounted nail lifter, nail guiding means, ,an escapement mechanism 1n communication with the nailguide, operating means for swinging the nail lifter into communication with the nail guide to feed nails to the escapement mechanism during the said swinging movement, electromagnetic nail driving (means, a switch controlling the operation of the nail driving means and actuated by the aforementioned operating means during a portion of its movement, and means for returning the operating means to normal 'position and to operate the escapement to feed a nail into position inline with the driving 2. A fur nailing device comprising a swingably mounted nail lifter, nail guiding means,

an escapement mechanism in communication with the nail guide, operating means for swinging the nail lifter into communication with the nail guide to feed nails to the escapement mechanism during the said swinging movement, electromagneticy nail driving means, a switch controlling the operation of the nail driving means and actuated by thc aforementioned operating means during a portion of its movement, a nail alining member in line with the nail driving means, and means for returning the operating means to normal Vposition and to operate the escapement to feed the nail into the said alining member.

3. A fur nailing device comprising a swingably mounted nail lifter, nail guiding means, an yescapement mechanism kin communication with the nail guide, operating means for rswinging they nail lifter into communication with the nail guide to feed nails to the escapement mechanism during the said swinging movement, electromagnetic nail driving -.means, a switch controlling theoperation oi' the rnail driving means and actuated by the aforementioned operating means during a portion-of its'movement, a nail alining member in line with the nail ,driving means, a

`nail chute in line withy the escapement and nail guide, and means for returning the operating means to normal position to actuate the escapement to permit the nail to drop into the chute and into the nail alining member.

4:. In a fur nailing device, a supporting frame, a nail hopper, a nail lifting member swingably mounted on the frame and extending into the hopper through an opening in one wall thereof, a nail guide, electromagnetic nail driving means, a plate normally closing the opening in the hopper wall, means for actuating the nail driving means, swinging the nail lifting member into communication with the guide and for simultaneously lifting the closing plate to permit the nails tr enter the nail guide, and an escapement associated with the nail guide to permit a single nail to drop into alinement with the driving means.

5. In a device of the nature described, a

ksvvingingly 4mounted `nail-1 lifter, nail guiding meansY in operative communicationtherewith,

vmeans for feeding nails throughthe said guiding means to a kpredetermined point .v ment with one end of the said guiding means,

thereon, a nail timing escapement in coin- Y munication therevvith,ja nail chute in Aalinenail .driving means, a member having a lnail alining chamber therein inline With the guid- Y Vvauxiliary resilient nailjguide at the bottom Y mentv in communication therewith, a nail ing means, Vmeans for operating the escapement todropa single nail into the chute, an

of the chute entering the alining chamber, fui` gripping and stretching means in alinement therewith, and means for drivingfthe nail outfof the auxiliary guide throughthe f fur.

through the saidl guiding means toa predetermined point thereon, a nail timing escapechute in alinement with one end of the said guiding means, nail driving means, a Vinember having a nail alining chamber therein in line with the guidiiigmeans, meansfor operating the escapeinent to drop a single nail into y thel chute, an auxiliary resilient nail guide at signature.

the bottomV of the chute entering the alining chambenfur gripping and stretching means, comprising a pivotally mounted toothed le-v ver, teeth on the alining member in line with the teeth on the lever, `pins projecting from the alining member through openings in the lever, and means for operating the nail driving` member While the urvis soY gripped.

7. In combination With anailing. device having a handle and a base, a nail alining Y member, and pins projectingdownwardlyY from said memberand extending through openings in the base, as and for the purpose described. Y Y 1 j y In'testimo'ny Whereofl hereunto aliix my Y 6. ln a device of the nature described,nail v guiding means, means for feeding nails y ALEXANDER ALTMA. 

